Tooth-powder.



- dentifrice, yet the use of it is Objectionable UNITED STATES PATENTOFFICE.

WILLIAM EDWARD BANNER, OF PERTH, ONTARIO, CANADA.

TOOTH-POWDER.

No Drawing.

provements in Tooth-Powder, of which thefollowing is a specification.

This invention relates to improvements in tooth powders and the objectsof the invention are to overcome the difliculties of spilling andwasting the powder which have hitherto been inherent in the use of thearticle' 1 While some form of tooth powder is universally recommended asthe. best form of to many persons owing to the difliculty of usin thepowder without scattering and wasting it. I

It has been attempted to overcome these difliculties by various forms ofcontainers having constricted outlet apertures but the expense ofconstructing these is considerable, and owing to the nature of thepowdered material,it has been found impossible to obtain a discharge ofit in a uniform and even stream. a

I propose to overcome these diificulties by forming the powder intogranules which will readily flow but which Wlll at the same time beadapted to breakdown easily when rubbed or moistened whereby they willnot wear the enamel on the teeth or be otherwise unsatisfactory from adental standpoint.

The ingredientsor material fromwhich tooth powder is formed do not formpart of the present invention, which relates to the physical structureof the powder.

Any of the wellknown forms of tooth powder manufactured from chalk,borax, sodium bicarbonate, powdered soap or potassium chlorate, or otheringredients as well known in the art might be used.

The ordinary tooth powder mixture is, according to my invention, formedinto small granules of about the consistency of coarse sand, the size ofthe granules being Specification of Letters Patent.

Patented Dec. 30, 1913.

Application filed January 31, 1912. Serial No. 674,514.

variedif desired to suit diflferent tastes. I have'found that a finenessof about number thirty. mesh is suitable for the purpose. The granulesmay be produced in any way. Preferably they are produced by moisteningthe powder with water or other suitable liquid and forcing the dampmaterial through a sieve, then drying the same and then afterwardputting the mixture through another sieve ofthe desired mesh, thusproducing a granule which has every property of the original powder butis easier to handle and use and when in use will'be reduced again to thepowder by the moistenin or rubbing. When a powder such as the is placedin a container it will be found possible to pour it therefrom on to atooth brush without spilling and with little or no waste. The materialwill flow very readily and in an even stream.v I

As many chan es could be made in the above powder an many apparentlywidely different embodiments of the invention, within the scope of theclaims, produced without departing from the spirit or scope thereof, itis intended that all matter contained in the accompanying specificationshall be interpreted as illustrative in a limiting sense.

What I claim as my invention is:

1. As a new article of manufacture a composite commercial toothpowdercomprising artificially formed granules each adapted to readily breakdown into powdered form when moistened or rubbed.

2. As a new article of manufacture a com posite commercial tooth powderformed-into artificial r'anules each of said granules consistin 0 downinto powdere form when rubbed.

In witness whereof I have hereunto set Russnr. S. SMART, I PEARLE M.Gmow.

and not a; multiplicity of materials, said granues being ada ted readilyto'be broken

